GIT_PS1_SHOWUPSTREAM like in bash_completion

[mathieuroche]

It'll be nice to have the same information as in bash_completion (work also with zsh).

Thanks.

GIT_PS1_SHOWUPSTREAM

# If you would like to see the difference between HEAD and its
#       upstream, set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates
#       you are behind, ">" indicates you are ahead, and "<>"
#       indicates you have diverged.  You can further control
#       behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated
#       list of values:
#           verbose       show number of commits ahead/behind (+/-) upstream
#           legacy        don't use the '--count' option available in recent
#                         versions of git-rev-list
#           git           always compare HEAD to @{upstream}
#           svn           always compare HEAD to your SVN upstream
#       By default, __git_ps1 will compare HEAD to your SVN upstream
#       if it can find one, or @{upstream} otherwise.  Once you have
#       set GIT_PS1_SHOWUPSTREAM, you can override it on a
#       per-repository basis by setting the bash.showUpstream config
#       variable.

[dolmen]

👍

[dolmen]

We just need someone motivated to work on that...

[jaesivsm]

It's a cool feature indeed, and I have produced a first draft for its implementation but I have two problems with it :

• I have to make another call to git rev-list. Couldn't find a way around it. Maybe a fresh look on that may find a smarter solution.
• I implemented the verbose version of GIT_PS1_SHOWUPSTREAM as it is more consistent with the existing feature of counting unpushed commits. It shouldn't be to hard to implement the "</>" thingy though, so just tell me if you want it any other way.

[jaesivsm]

After a bit of testing, it seems that adding a git rev-list doesn't impact that much the overall performences of the _lp_git_branch_color function.

See patched :

time for i in `seq 1000`; do _lp_git_branch_color > /dev/null ; done 

real    1m6.542s
user    0m9.009s
sys 0m9.573s

Against unpatched :

time for i in `seq 1000`; do _lp_git_branch_color > /dev/null ; done 

real    1m1.605s
user    0m8.297s
sys 0m9.557s

I'll do a pull request.

[dolmen]

#269 is now merged in develop. This is the implementation of GIT_PS1_SHOWUPSTREAM=verbose.